Patrick Thornton
SRI International

Example of a Multiple Response Item
◦ Variable coding and example data


A Cross Tabulation using Proc REPORT
Examine the Proc REPORT Syntax for:
◦
◦
◦
◦
◦
Grouping and counting observations
Creating a summary row
Adding a ‘Total’ label to the summary row
Creating a count and percent
Summing columns
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 Respondents may leave blank those service categories
they did not receive
 Respondents may not provide a response to any of the
service categories
3
Total:
Referral One:

 Children
Number of
receiving
childrenatreceiving
least oneatservice
least one service

 Children
Number of
and
children
percentreceiving
of children
each
receiving
service (e.g.
each CHI)
service
 Number
Percent of
receiving each service (e.g. HV)

of children
total services
 Number of total services
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proc report data=md
 nowd missing;
 col referral n;
 define referral /group center;
 define n /’Children’ center;
 where CHI ne . or HV ne . or TS ne . ;
run;



DEFINE
COL determines
prevents
thethe
the
/GROUP
order
option
of columns,
window
is used
REFERRAL
and
to
obtain
MISSING
and
the N
 NOWD
Nwith
is used
to interactive
label
and
center
the
column

WHERE
removes
OBS
missing
on
all
service
variables
includes
distinct
where Nvalues
is
OBS
a key
missing
ofword
REFERRAL
REFERRAL
to obtain the count of observations
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proc report data=work.multir
missing nowd;
col referral n;
define referral /group;
define n /’Children’ center;
 rbreak after / summarize;
Run;
 Creates total number of children (OBS)
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proc report data=work.multir
missing nowd out=d;
col referral n;
define referral /group;
define n /’Children’ center;
rbreak after / summarize;
run;
Proc print data=d noobs;
run;
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col referral  newcol n;
define referral /group  noprint;
define n /’Children’ center;
 define newcol/computed ‘Referral’;
 compute newcol /char length=15;
 if _BREAK_="_RBREAK_" then newcol = 'Total';
else newcol = put(referral,myrows.);
endcomp;
rbreak after / summarize;
 Test

Adds_BREAK_
Defines
NEWCOL
ablock,
computed
as
COMPUTED
variable
not
in the

Hides
the
REFERRAL
variable

Start
aNEWCOL,
compute
NEWCOL
as aset
15 NEWCOL
length

for
summary
row
and
data
set variable
character
to
“Total,”
otherwise set to formatted value of
REFERRAL.
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col referral newcol n  CHI  PCHI;
define referral /group noprint;
define n / ‘Children’ center;
 define CHI / analysis ‘CHI’ sum format=5.0 center;
 define PCHI /computed ‘%CHI’ format=percent8.1 center ;
 compute PCHI;
PCHI = CHI.sum/n;
endcomp;

isaacolumn
columnand
and
definedas

 PCHI
CHIisisCOMPUTED
defined
SUM

PCHI
as
CHI.SUM
/as
naCOMPUTED
Repeat for each Service
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col referral newcol n  CHI PCHI HV PHV TS PTS total;
 define total/computed "Services" width=10 center;
compute total;

total = sum(chi.sum, hv.sum,ts.sum);
endcomp;


 Total
As shown
is sum
defined
on of
previous
the
as COMPUTED
sums
slide,
of each
service
service
sumsvariable
and
computed percents. Total column is added.
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proc
compute
report newcol
data=work.multir
/char length=15;
missing nowd ;
col IF
referral
_BREAK_='_RBREAK_'
newcol n CHI p1THEN
HV p2
newcol
TS p3=total;
'Total';
define
elsereferral
newcol/group
= put(referral,myrows.);
left width=15 noprint;
define
endcomp;
newcol /computed "Referral" ;
compute
define n/format=8.0
p1;
"Children" center;
define
p1 =
CHI
CHI.sum
/ analysis
/n; sum "CHI" format=5.0 center;
endcomp;
define HV / analysis sum "HV" format=5.0 center;
compute
define TSp2;
/ analysis sum "TS" format=5.0 center;
define
p2 =
p1HV.sum
/computed
/n; "%" format=percent8.1 center ;
endcomp;
define p2 /computed "%" format=percent8.1 center ;
compute
define p3p3;
/computed "%" format=percent8.1 center ;
define
p3 =
total/computed
TS.sum /n;
"Services" width=10 center;
endcomp;
compute total;
total = sum(CHI.sum , HV.sum , TS.sum);
endcomp;
rbreak after /summarize;
where CHI ne . or HV ne . or TS ne . ;
run;
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proc report data=work.multir missing nowd;
col referral newcol n CHI P1 total;
define referral /group noprint;
define n / ‘Children’ center;
define newcol/computed ‘Referral’;
define CHI / analysis ‘CHI’ sum;
define P1 /computed ‘%’;
compute newcol /char length=15;
if _BREAK_=‘_RBREAK_’ then newcol= 'Total';
else newcol = put(referral,myrows.);
endcomp;
compute P1; P1 = CHI.sum /n; endcomp;
define total/computed ‘Services’ width=10;
compute total;
total = sum(chi.sum);
endcomp;
rbreak after / summarize;
where CHI ne .;
run;
Example
•Libref
and Data SetMacro
Values
•Row
variable, label Variables
and format
•Observation
Label &Lib
Work
•Total Label
Multir for the multiple
&d
•Variables
referralitem
&row
response
•Labels
for each variable
Referral
&rowlabel
Myrows
&rowformat
Children
&obslabel
Services
&totallabel
CHI HV TS
&series
CHI^HV^TS
&labels
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%macro chooseall(lib,d,row,rowlabel,rowformat,obslabel,totallabel,series,labels);
proc report data=&lib..&d missing nowd;
col &row newcol n [1 SERIES AND PERCENT] total; [e.g. CHI p1 HV p2 TS p3]
define &row /group left width=15 noprint;
define newcol /computed “ &rowlabel “;
define n/format=8.0 “ &obslabel " center;
[2 DEFINE EACH SERIES VARIABLE ] [e.g. define CHI / analysis sum "CHI";]
[3 DEFINE PERCENT FOR EACH] [e.g. define p1 /computed "%“ ;]
define total/computed “ &totallabel " width=10 center;
compute newcol /char length=15;
IF _BREAK_='_RBREAK_' THEN newcol = 'Total';
else newcol = put( &row ,” &rowformat.. “);
endcomp;
[4 COMPUTE EACH PERCENT] [e.g. compute p1; p1=CHI.sum /n; endcomp;]
compute total;
[5 COMPUTE TOTAL] [e.g. total = sum(CHI.sum , HV.sum , TS.sum);]
endcomp;
rbreak after /summarize;
[6 CREATE A WHERE STATEMENT] [e.g. where CHI ne . or HV ne . or TS ne . ;]
run;
%mend;
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%macro
chooseall(lib,d,row,rowlabel,rowformat,obslabel,totallabel,series,labels);
%let vargroup =; %*[1 COLUMN SERIES AND PERCENTS] ;
%let define =; %*[2 DEFINE EACH SERIES VARIABLE];
%let definep =; %*[3 DEFINE PERCENT FOR EACH];
%let computedp =; %*[4 COMPUTE EACH PERCENT] ;
%let total=; %* [5 COMPUTE TOTAL];
%let where=; %* [6 CREATE A WHERE STATEMENT];
%*Iterate through each variable in series;
%let i = 1; %do %until(%scan(&series,&i)= | &i > 50);
%let var = %scan(&series,&i);
%let label = %scan(&labels,&i,%str(^));
%*
[5
COMPUTE
TOTAL];
%*[2
%*[3
[6DEFINE
CREATEEACH
PERCENT
A
WHERE
SERIES
FOR
STATEMENT];
VARIABLE
EACH]; ]; ;
%*[1
COLUMN
SERIES
AND
PERCENTS]
%letwhere
total===&define
&total
&var..sum
%str(,);
%let
%let
definep
define
=&where
&definep
&var
define
define
ne
&var
%str(.)
p&i
/ /computed
analysis
or;
sum
"%"
"&label"
format=percent8.1
format=5.0 center%str(;);
center %str(;);
vargroup
=
&vargroup
&var
p&i;
%let i = %eval(&i + 1);
%end;
%*Remove the comma and or;
%let total = %substr(&total,1,%eval(%length(&total) - 1));
%let where = %substr(&where,1,%eval(%length(&where) - 2));
%*[PROC REPORT FROM PREVIOUS SLIDE];
%mend;
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


PROC REPORT can Generate Client-Quality
Tabulations of Multiple Response Items (MRI)
A Relatively Concise Macro can be Used to
Generate the Extended PROC REPORT Syntax
Limitations
◦ The MRI variables must be coded 1=Yes, 0=No
◦ Many MRI variables requires table breaks
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Your comments and questions are valued and
encouraged.
Patrick Thornton Ph.D.
Sr. Scientific Programmer/Analyst
SRI International, Center for Education and
Human Services
Phone: 650 859-5583
Fax: 650 859-2861
Email: [email protected]
Web: www.sri.com
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